CS Lymph Nodes

Notes

**Note 1**: For head and neck schemas, this field includes all lymph nodes defined as Levels I-VII and Other by AJCC. The complete definitions are provided in the General Rules, Section 2. **Note 2**: For head and neck schemas, additional information about lymph nodes (size of involved nodes, extracapsular extension, levels involved, and location of involved nodes above or below the lower border of the cricoid cartilage) is coded in CS Site-Specific Factors 1, 3-9. **Note 3**: For head and neck cancers, if lymph nodes are described only as "supraclavicular", try to determine if they are in Level IV (deep to the sternocleidomastoid muscle, in the lower jugular chain) or Level V (in the posterior triangle, inferior to the transverse cervical artery) and code appropriately. If the specific level cannot be determined, consider them as Level V nodes. **Note 4**: The description of lymph nodes has been standardized across the head and neck schemas. All lymph node levels and groups listed here are considered regional nodes for AJCC staging. Summary Stage 1977 and Summary Stage 2000 divide these nodes into regional and distant groups. **Note 5**: Facial nodes including mandibular nodes have been moved from code 100 in CS Version 1 to code 110.
Code Description AJCC 7 N TNM 6 N Summary Stage 1977 N Summary Stage 2000 N
000 No regional lymph node involvement N0 NA NONE NONE
100 Positive regional node(s):
Level I:
Level IA - Submental
Level IB - Submandibular (submaxillary), sublingual
Level II - Upper jugular:
Jugulodigastric (subdigastric)
Upper deep cervical
Level IIA - Anterior
Level IIB - Posterior
Level III node - Middle jugular
Middle deep cervical
Level IV - Lower jugular:
Jugulo-omohyoid (supraomohyoid)
Lower deep cervical
Virchow node
Cervical, NOS
Deep cervical, NOS
Internal jugular, NOS
Regional lymph node(s), NOS
N1 NA RN RN
110 Positive regional node(s):
Facial:
Buccinator (buccal)
Mandibular
Nasolabial
N1 NA D RN
120 Positive regional node(s):
Level V - Posterior triangle group:
Posterior cervical
Level VA - Spinal accessory
Level VB - Transverse cervical, supraclavicular (see Note 3)
Level VI - Anterior compartment group:
Laterotracheal
Paralaryngeal
Paratracheal - above suprasternal notch
Perithyroidal
Precricoid (Delphian)
Prelaryngeal
Pretracheal - above suprasternal notch
Recurrent laryngeal
Level VII node - Superior mediastinal group
(for other mediastinal nodes see CS Mets at DX):
Esophageal groove
Paratracheal - below suprasternal notch
Pretracheal - below suprasternal notch
Other groups:
Parotid:
Infraauricular
Intraparotid
Periparotid
Preauricular
Parapharyngeal
Retroauricular (mastoid)
Retropharyngeal
Suboccipital
N1 NA D D
180 Stated as N1 with no other information on regional lymph nodes N1 NA RN RN
190 OBSOLETE DATA RETAINED V0200

Stated as N2a, no other information
ERROR: NA RN RN
200 OBSOLETE DATA RETAINED V0200

Multiple positive ipsilateral nodes listed in code 100
ERROR: NA RN RN
220 OBSOLETE DATA RETAINED V0200

Multiple positive ipsilateral nodes listed in code 120
ERROR: NA D D
290 OBSOLETE DATA RETAINED V0200

Stated as N2b, no other information
ERROR: NA RN RN
300 OBSOLETE DATA RETAINED V0200

Regional lymph nodes as listed in code 100:
Positive ipsilateral node(s), not stated if single or multiple
ERROR: NA RN RN
320 OBSOLETE DATA RETAINED V0200

Regional lymph nodes as listed in code 120:
Positive ipsilateral node(s), not stated if single or multiple
ERROR: NA D D
400 OBSOLETE DATA RETAINED V0200

Regional lymph nodes as listed in code 100:
Positive bilateral or contralateral nodes
ERROR: NA RN RN
420 OBSOLETE DATA RETAINED V0200

Regional lymph nodes as listed in code 120:
Positive bilateral or contralateral nodes
ERROR: NA D D
490 OBSOLETE DATA RETAINED V0200

Stated as N2c, no other information
ERROR: NA RN RN
500 OBSOLETE DATA RETAINED V0200

Regional lymph nodes as listed in code 100:
Positive node(s), not stated if ipsilateral, or bilateral, or contralateral,
AND not stated if single or multiple
ERROR: NA RN RN
520 OBSOLETE DATA RETAINED V0200

Regional lymph nodes as listed in code 120:
Positive node(s), not stated if ipsilateral, or bilateral, or contralateral,
AND not stated if single or multiple
ERROR: NA D D
600 OBSOLETE DATA RETAINED V0200

Stated as N2, NOS
ERROR: NA RN RN
700 OBSOLETE DATA RETAINED V0200

Stated as N3, no other information
ERROR: NA RN RN
800 Lymph nodes, NOS N1 NA RN RN
999 Unknown; regional lymph nodes not stated
Regional lymph nodes cannot be assessed
Not documented in patient record
NX NA U U